The energy sector in Bouches-du-Rhône features a mix of established industrial players and newer companies focused on renewable energy. Large groups like BOURBON, with its maritime services for oil, gas, and wind, and Onet Technologies, specializing in nuclear engineering, operate alongside smaller firms. The region also hosts companies like Baudouin, manufacturing marine and power generation diesel engines, and GEOCEAN, a marine works contractor.
A notable trend is the strong presence of companies involved in maritime activities, reflecting the department's coastal location. This includes oil and gas transportation, as seen with maritima and Société du Pipeline Sud-Européen, as well as offshore wind energy, exemplified by BW Ideol, a leader in floating offshore wind technology. The sector also includes solar energy producers like Enoé and O2 TOIT, indicating a shift towards diverse energy sources.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
BOURBONbourbonoffshore.com
Provides innovative, sustainable maritime services for oil, gas, and wind energy sectors with a modern fleet and 4,600 employees in 32 countries. |
5,069 | |||
| 2 |
Onet Technologiesonet.fr
Expertise in nuclear engineering and services for reactor maintenance, dismantling, decommissioning, waste management, and training within the nuclear industry lifecycle. |
2,071 | |||
| 3 |
BOURBON OFFSHORE SURFbourbonoffshore.com
A leading ship management company with a fleet of 80 support vessels operating in West Africa, prioritizing safety and high standards |
589 | |||
| 4 | 324 | ||||
| 5 |
Baudouinbaudouin.com
manufacture high-quality marine and power generation diesel engines, including propulsion solutions, generator sets, and auxiliary engines |
322 | |||
| 6 |
GEOCEANgeocean.com
Marine works contractor specializing in subsea pipeline installation, coastal infrastructure, and difficult submarine projects, with expertise in site analysis and renewable energy. |
218 | |||
| 7 |
MATEN SECOMOCmaten-secomoc.com
French group provides comprehensive solutions for the tank industry, offering engineering, construction, maintenance, and tailored equipment for various industrial sectors worldwide. |
170 | |||
| 8 |
Enoéenoe-energie.fr
French producer of green and local energies, mastering the entire value chain: design, development, financing, construction, operation and maintenance of solar power plants. |
170 | |||
| 9 | 135 | ||||
| 10 |
maritimasogestran.com
With over 40 years of maritime expertise, this company specializes in petroleum transportation, providing oil bunkering services and depot storage in Fos/Lavéra port area |
121 | |||
| 11 |
Société du Pipeline Sud-Européen (SPSE)spse.fr
Operation and management of a crude oil pipeline network from France to Germany, including large-scale oil storage facilities. |
113 | |||
| 12 |
Clarke Energy - Frclarke-energy.com
Global specialist providing gas engine power generation, biogas upgrading solutions, and hybrid energy systems including hydrogen and batteries for resilient grid integration. |
101 | |||
| 13 |
Cybernetixten.com
A provider of surveillance and robotics solutions for the fast-changing energy industry, focusing on improving economics, quality, safety, and reducing carbon footprint |
95 | |||
| 14 |
BW Ideolbw-ideol.com
Pioneer and global leader in floating offshore wind, designing, executing, and developing projects with patented Damping Pool® technology; floating foundation supplier and co-developer. |
89 | |||
| 15 |
CSTI GROUPEcsti-groupe.com
Design and manufacture of special machines, stainless steel fabrication, testing loops, reactor equipment, project development, control, integration, and maintenance in nuclear sector. |
88 | |||
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| 16 |
IRISOLARIS GROUPE
Independent renewable energy group; specializes in photovoltaic building construction, ground/rooftop solar power plants, metal frameworks, and self-consumption solutions. |
88 | |||
| 17 | 81 | ||||
| 18 |
Enogiaenogia.com
ENOGIA specializes in compact, durable micro-turbomachinery for heat-to-electricity conversion, offering ORC modules and air compressors for hydrogen mobility |
79 | |||
| 19 |
AXONEaxonegroup.com
Expertise in complex system architecture and safety, focusing on sustainable industrial optimization to balance ecology and technology for clients. |
77 | |||
| 20 |
BOURBON SUBSEA SERVICESbourbonoffshore.com
This company provides complete solutions for offshore energy industries |
64 | |||
| 21 |
Calogenacalogena.com
Calogena offers a solution to decarbonize European urban heating networks with a small modular nuclear reactor for residential and office buildings |
56 | |||
| 22 |
ETI Offshoreeti-offshore.com
French engineering company specialized in designing and constructing offshore fluid transfer systems Experienced team delivers high-quality, tailored products with no delays or failures |
53 | |||
| 23 |
CHEMET GLI Servicessas.chemet.eu
European manufacturer of pressure tanks for liquefied gases, offering turn-key installations, cryogenic stations, and innovative tank car solutions Leading in EU market with global presence |
50 | |||
| 24 |
SUNPARTNER Technologiessunpartnertechnologies.com
Innovative company in the south of France developing invisible photovoltaic solutions for consumer electronics, building, and transportation markets, making objects autonomous |
49 | |||
| 25 |
CHARGEPOLYchargepoly.com
An engineering and technology company specializing in electrifying transportation markets by providing cost-effective charging solutions for commercial fleets |
48 | |||
| 26 |
HSL Technologies (HySiLabs)hsl.tech
Revolutionary technology enables on-demand hydrogen generation from stable liquids, eliminating storage issues and offering a flexible energy solution for various applications |
47 | |||
| 27 |
Optimum Trackeroptimum-tracker.com
A visionary company specializing in patented solar tracking systems for utility-scale solar power plants, offering innovative products and services for optimal energy efficiency |
45 | |||
| 28 | 45 | ||||
| 29 |
AIS Bardotaisltd.com
Specializing in SURF construction projects, this company offers innovative polymer, syntactic, and steel technologies to reduce costs and enhance reliability |
42 | |||
| 30 |
SILOSUNsilosun.fr
Converts industrial buildings' large rooftops into solar energy sources, addressing contemporary energy challenges through photovoltaic solutions. |
38 | |||
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
More company lists in the Bouches-du-Rhône department
- The largest companies in the Bouches-du-Rhône department 3,317
- Multinational companies in the Bouches-du-Rhône department 351
- Companies with in-house R&D in the Bouches-du-Rhône department 320
- Retail chains in the Bouches-du-Rhône department 281
- Professional services firms in the Bouches-du-Rhône department 249
- Manufacturers in the Bouches-du-Rhône department 187
- Public sector organisations in the Bouches-du-Rhône department 183
- Distributors and wholesalers in the Bouches-du-Rhône department 156
- IT services companies in the Bouches-du-Rhône department 155
- IT Services and IT Consulting companies in the Bouches-du-Rhône department 154
- SaaS companies in the Bouches-du-Rhône department 145
- Hardware manufacturers in the Bouches-du-Rhône department 142
- Family-owned companies in the Bouches-du-Rhône department 142
- Consulting firms in the Bouches-du-Rhône department 129
- Software Development companies in the Bouches-du-Rhône department 120
- Education providers in the Bouches-du-Rhône department 119
- Business Consulting and Services companies in the Bouches-du-Rhône department 113
- Real Estate companies in the Bouches-du-Rhône department 109
- Healthcare providers in the Bouches-du-Rhône department 107
- Law Practice companies in the Bouches-du-Rhône department 100
- Critical infrastructure operators in the Bouches-du-Rhône department 98
- Accounting firms in the Bouches-du-Rhône department 93
- Accounting companies in the Bouches-du-Rhône department 92
- Construction companies in the Bouches-du-Rhône department 91
The same list elsewhere in France
- Energy companies in France 1,594
- Energy companies in Île-de-France 475
- Energy companies in Auvergne-Rhône-Alpes 236
- Energy companies in Nouvelle-Aquitaine 173
- Energy companies in the Hauts-de-Seine department 144
- Energy companies in Occitanie 128
- Energy companies in Provence-Alpes-Côte d'Azur 124
- Energy companies in Grand Est 115
- Energy companies in the Rhône department 104
- Energy companies in Hauts-de-France 74
- Energy companies in Pays de la Loire 66
- Energy companies in the Gironde department 61
- Energy companies in Brittany 56
- Energy companies in the Haute-Garonne department 48
- Energy companies in the Nord department 42
- Energy companies in the Isère department 41
- Energy companies in the Loire-Atlantique department 40
- Energy companies in Bourgogne-Franche-Comté 38
- Energy companies in the Hérault department 38
- Energy companies in Normandy 38
- Energy companies in the Bas-Rhin department 33
- Energy companies in Paris 187
- Energy companies in Lyon 34
- Energy companies in Toulouse 33